Quick answers
- Does Ronald D. Shiell accept Medicare assignment?
- Yes. Medicare's clinician data says Ronald D. Shiell accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Ronald D. Shiell see?
- In 2024, CMS data shows 2,451 Original Medicare patients and 17,850 services for Ronald D. Shiell. This counts Original Medicare only and measures volume, not quality.
- What is Ronald D. Shiell's NPI number?
- 1285687384. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Ronald D. Shiell, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 2,451 |
|---|---|
| Services billed to Medicare | 17,850 |
| Different services or procedures | 96 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Destruction of precancer skin growth, 2-14 growths (17003)4,495 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)2,313 services
- Destruction of precancer skin growth, 1 growth (17000)1,557 services
- Removal and microscopic exam of growth of head, neck, hands, feet, or genitals, each additional stage, 1-5 tissue blocks (17312)1,155 services
- Biopsy of related skin growth, first growth (11102)1,148 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High cholesterol75%
- High blood pressure71%
- Arthritis45%
- Ischemic heart disease27%
- Diabetes24%
- Chronic kidney disease21%
Hospitals where Ronald D. Shiell works
Medicare's Facility Affiliation Data lists Ronald D. Shiell at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Eisenhower Medical CenterRancho Mirage, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050573
Practice locations
Addresses where Ronald D. Shiell is enrolled with Medicare (CMS data updated October 2, 2026).
- 1457 Ford St, Suite 105Redlands, CA 92373 (909) 793‑2964
- 400 Newport Ctr Dr, Suite 702Newport Beach, CA 92660 (949) 644‑0101
Group practices
Medicare enrollment lists Ronald D. Shiell as a member of this group (CMS data updated October 2, 2026).
- J Robert West MD Inc138 clinicians in the group
Specialties
- Dermatologyprimary
Other dermatologists in Redlands
Clinicians with the same Medicare primary specialty in Redlands, CA — not a recommendation.
Other clinicians in J Robert West MD Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of California, San Francisco School Of Medicine |
| Graduation year | 1989 (37 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1285687384 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians